Straparollus planodorsatus fossil snail


Straparollus planodorsatus fossil snail


Gastropoda, Fossil


Straparollus planodorsatus (Meek & Worthen, 1860) - fossil snail from the Mississippian of Ohio, USA. (apical view; ~2.0 centimeters across at its widest)

The Maxville Limestone is the only Middle to Late Mississippian-aged stratigraphic unit in Ohio. Its outcrop belt is not extensive - it principally occurs in Muskingum County and Perry County in eastern and southeastern Ohio. The Maxville Formation can also be found as cobbles and pebbles in the basal Sharon Formation (Lower Pennsylvanian), which disconformably overlies Ohio's Mississippian rocks. Paleohills, or erosional outliers, of Maxville Limestone have also been identified.

This fossil snail has eroded free from calcareous shale host rock derived from the Maxville.

Classification: Animalia, Mollusca, Gastropoda, Euomphalina, Euomphalidae

Stratigraphy: Maxville Limestone, Meramecian to Chesterian, Middle to Upper Mississippian

Locality: East Fultonham Quarry (Shelly Materials, Incorporated), western side of Rt. 345/Saltillo Road, southwest of the town of East Fultonham & south-southeast of the town of Fultonham, southwestern Newton Township, far-southwestern Muskingum County, eastern Ohio, USA (39° 50' 50.76" North latitude, 82° 08' 08.73" West longitude - this portion of the quarry has since been filled in).


St. John, James




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St. John, James, “Straparollus planodorsatus fossil snail,” SCRC Virtual Museum at Southern Illinois University's Morris Library, accessed December 2, 2022,


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